Intel® Xeon motherboard Pro WS C621-64L SAGE/10G

Intel® Xeon® WDDR4-RDIMMSATA3

Overview
ASUS Pro Workstation motherboards are engineered for professionals in AI, deep learning, 3D rendering, animation and media production. The Pro WS C621-64L SAGE/10G delivers expandability, dense storage options, robust connectivity and platform-level management to meet demanding workstation workflows.

Key features

• 2 x USB 3.2 Gen2 ports (Type‑A & Type‑C)
• 2 x 10GbE LAN ports (Intel X550)
• USB BIOS FlashBack button
• 4 x USB 3.2 Gen1 ports + 1 header
• 5 audio jacks + SPDIF out (7.1-channel)
• Embedded ASMB9‑iKVM for remote management
• Intel LGA 3647 socket — supports Intel Xeon W‑3200 and Xeon Scalable
• 12 x DIMM slots (DDR4 2933 RDIMM) — up to 1.5 TB with ECC
• 10 x SATA 6Gbps ports; 1 x M.2 (up to 22110) with heatsink
• Total 5 PCIe slots with multiple x16 links — supports up to four double‑width GPUs

Breakthrough Performance
Supports Intel Xeon W‑3200 (up to 28 cores / 56 threads) and Intel Xeon Scalable CPUs via LGA3647, enabling fast visualizations, simulations and render tasks across CPU‑intensive professional workloads.

Dual onboard 10G LAN
Dual Intel X550 10GBASE‑T controllers provide server‑grade, low‑latency, high‑bandwidth network connectivity for large file transfers and data‑intensive applications.

Multi‑GPU support
Designed to accommodate up to four double‑decked, actively or passively cooled GPUs. Each GPU slot supports PCIe Gen3 x16 link bandwidth; compatible with NVIDIA Tesla and Quadro for rendering, simulation and AI workloads.

Memory and reliability
Twelve DIMM slots with ECC support allow up to 1.5 TB of DDR4 RDIMM memory, improving stability by detecting and correcting single‑bit errors critical for long compute sessions.

Comprehensive IT management
Integrated ASMB9‑iKVM and compatibility with ASUS Control Center deliver out‑of‑band and in‑band management: remote BIOS updates, fan control, standalone KVM, video recording and BSOD capture for efficient remote diagnostics.

Thermal design and cooling
Advanced thermal solution includes an efficient VRM heatsink with metal fin array, multiple heatsinks connected by heat‑pipe in the airflow path, and an M.2 heatsink to reduce SSD temperatures under sustained loads.

Storage expansion and Intel VROC
Supports ASUS NVMe riser cards to increase NVMe capacity and leverages Intel VROC to attach NVMe devices to CPU PCIe lanes for NVMe RAID (VROC HW key may be required separately).

Technical specifications

• Model: Pro WS C621-64L SAGE/10G
• Brand: ASUS
• CPU socket: Intel LGA 3647
• Supported CPUs: Intel Xeon W‑3200 series; Intel Xeon Scalable
• Memory: 12 x DIMM, DDR4 2933 RDIMM, up to 1.5 TB, ECC support
• LAN: Dual Intel X550 10GbE onboard
• USB: 2 x USB 3.2 Gen2 (A + C), 4 x USB 3.2 Gen1, 1 x USB 3.2 Gen1 header
• SATA: 10 x SATA 6Gbps
• M.2: 1 x M.2 (supports up to 22110) with heatsink
• PCIe: 5 slots (see key features for slot details)
• Multi‑GPU: Up to four double‑deck GPUs (PCIe Gen3 x16)
• Audio: 5 jacks + SPDIF out (7.1)
• Management: Embedded ASMB9‑iKVM; ASUS Control Center compatible
• Thermal: VRM heatsink, metal fin array, heat‑pipe, M.2 heatsink
• Special: USB BIOS FlashBack, SafeSlot reinforced PCIe slots
• Notes: Intel VROC HW key may be required; full PCIe lane counts depend on CPU (Xeon W‑3200 supports 64 lanes)